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(No Model.) 2 Sheets-Sheet 1.

G. 'HITZLQ I ELEVATOR.

Patented Feb. 20, 1894.

I: 1.5km a ga 0:1 i: 0" M E 0/ F r E no Model.) 2 Sheets-Sheet 2.

G. HITZL. ELEVATOR.

No. 515,312.. Patented Feb. 20, 1894.

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CARL HITZL, OF ATTERSEE, AUSTRIA-HUN GARY, ASSIGNOR TO HIMSELF, ANDSIGMUND HOOHSTADTER, OF NEW YORK, N. Y.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 515,312, dated February20, 1894.

Application filed June 1,1893. Serial No. 476,232. (No model.)

To whom it may concern:

Be it known'that I, CARL HITZL, a subject of the Emperor ofAustria-Hungary, residing at Attersee, Austria-Hungary, have inventedcertain new and useful Improvements in Elevators, of which the followingis a description, reference being had to the accompanying drawings,wherein Figure 1 is a rear elevation of my improved elevator. Fig. 2 isa top or plan view of same, with cross-head and centrally-inclinedportion of standards removed. Fig. 3 is acentral, vertical section of myimproved elevator on the line w-w of Fig. 2. Fig. 4 is a transversesection of the cross-head on the line y-y of Fig. 1. Fig. 5 is adetailed view showing gearing mechanism and form of hood employed forinclosing the same. Fig. 6 is a detailed view, on an enlarged scale,showing form of ratchet-wheel and pawl which may be used in connectionwith my improved elevator.

Similar letters of reference indicate corresponding parts in all theviews.

My invention relates to that class of elevators intended chiefly for usein conveying from one floor to another within, or from the pavementoutside to the cellar or basement of, a building, packages and parcelsof more or less weight and bulk; and designed to be operated by physicalforce.

The object of this invention is to provide an elevator which shall besimple and cheap in construction, and by means of which one person maybe able to hoist or elevate an object of very great weight. To this endI make use of ordinary frame work, a drum to which rotary motion may beapplied through the medium of a perpetual screw and gearwheel, and ofcertain other details to be hereinafter more specifically set forth.

Having reference to the accompanying drawings, the letter A denotes thefloor or base, shown in the drawings rectangular in form.

The letter B denotes uprights or standards,

the same being secured to the base A, one at the respective cornersthereof, and being retained firmly in position by the transversetie-beams O, and the longitudinal tie-beam O. The standards or uprightsB terminate in centrally-inclined portions D, which serve to firmlyretain in position the cross-head E. The said inclined portion of thestandards may consist of a single piece of suitable material, properlyshaped and secured to the upper end of the standard in any convenientmanner. The cross-head E isprimarily supported by the studs F, thelatter being supported in turn by the central cross-beam O, whichconnects the transverse tiebeams O as is clearly shown in the drawings.

The connections of the various parts described, may be made by mortiseand tenon, or in any convenient manner.

The drum G is journaled at either end in the studs F, the journal at oneend of the drum G projecting beyond the stud a distance sufficient toadmit of a gear wheel H being mounted thereon; and to the end that saidgear-Wheel may be firmly mounted on said projecting portion of thedrum-journal, the latter should be given a quadrangular or many-sidedform, and the former should be provided with a central opening ofcorresponding form, (see Fig. 5.) The journal under considerationterminates in a tap, the same being screw-threaded to receive'the nut a,which serves to retain the gear-wheel in place.

The shaft 1) is screw-threaded in a manner to form a perpetual screw,the screw-threads thereof being adapted to mesh into suitable cogs orteeth formed upon the adjoining face of the wheel H, near its periphery.It will be readily understood, however, that, with but slight deviationsfrom the construction herein set forth, should the said cogs or teeth beformed upon the periphery of said wheel, equally as good results wouldbe obtained.

The gearing mechanism of my improved elevator is inclosed by a hood orhousing a, which should be constructed of material, as hard wood oriron, possessing a deal of strength and durability,particularly thatportion thereof in which the shaft b is journaled, as will shortly beexplained.

The hood 0 is provided with extensions 0, formed integral therewith,which lie closely in contact with the adjoining stud F, and throughwhich and into the said stud F, the screws d pass, to secure the hoodfirmly in place. The

rear side of the hood 0 is provided with an opening, near its base, ofsufficient size to allow the shaft b to be passed endwise through thesame. This opening admits of the ready introduction of the said shaft bto place, transversely within the hood 0, as will be clearly understood;and when so introduced to place, the inner end of the shaft 1) bears inthe front side of the hood 0, at a point near the base, and intransverse alignment with the opening last referred to, in the rear sideof the hood. That portion of the shaft b which projects rearward of thehood, should be of less diameter than that portion inclosed by the hood,in order that the said shaft may be provided with a shoulder or ridgeagainst which the collar e, upon the shaft 19, may be brought, the saidcollar being adapted to fit snugly within the opening in the rear sideof the hood 0 and provide a bearing for the shaft 1) at that point. Thecollar e is provided with an annular flange, which extends around theopening last referred to; and the said collar e is held in place bymeans of screws passing through the said flange and taking into the hood0, as will be clearly understood from Fig. 5. The collar e, when thussecured in place, prevents displacement of the shaft 1). The shaft 1) isprovided with a crank b, by means of which the operator rotates saidshaft when he desires the elevator to move upward.

A platform I extends inwardly from the tie-beam O, and should beoccupied by the operator when using the elevator.

For controlling the elevator, when descending, there are provided awheel I)", firmly mounted upon the shaft b, at a point adjacent to thehood 0, and a brake-lever c, pivoted to theprojection a, the saidbrake-lever being adapted to come in contact with the periphery of saidwheel 1), upon the free end thereof being raised by the operator.

The cross-head E is provided with a central longitudinal opening throughwhich the rope or cable f passes, one end of said rope or cable beingsecured to the drum G, and the other end thereof to a suitable objectabove the elevator.

It is essential that means be employed for stopping and holding theelevator at any desired point in its upward and downward travel, and tothis end I make use of the clutch j, the same being provided withjournals j and the gravity-arm j". At either extremity of thelongitudinal opening in the cross-head, above referred to, vertical waysor recesses are formed, which extend from the base of the cross-head toa point central thereof, and into which the journals of the clutch jtake when the clutch is inserted in place. The clutch journals are heldin position at the upper extremity of said recesses by means ofbed-plates j, the latter being held in place by means of screws is shownin dotted lines in Fig. 1. The gravity-arm j" is provided with ascrew-threaded tap j"" which takes the clutch j, the said gravity-armbeing connected with the said clutch after the latter has been securedin place. I prefer to concave the interior wall of the cross-head facingthe clutch j, as seen in Fig. 4. The rod Z is loosely connected, in anyconvenient and ordinary manner, the one end to the gravityarm j, and theother end to the brake-lever c", in order that, upon the free endof-said brake-lever being raised, the clutch j will be caused to releaseits grasp upon the rope or cable f, as will be readily understood.

The drum G may be provided with flanges, as n which will tend toincrease the efficient working of said drum and relative parts.

The construction herein described is specially adapted to interior use,and consequently suitable guides should be employed, as in priorstructures of this class, to prevent the elevator from tilting, and toinsure a direct upward and downward movement thereof.

Two or more elevators of the form herein described may be readily joinedtogether and advantageously used in painting or cleaning the exteriorwalls of a building, it being necessary only to observe that, when usedfor this purpose, the elevators should. adjoin each other so that thedrums will stand in parallel alignment.

If deemed expedient a ratchet-wheel and pawl, as shown in Fig. 6, may beused in addition to the clutch j, for insuring the retention of theelevator at any desired point in ICO its upward or downward travel,thepawl 0 being pivotally attached to the stud F, and adapted to take intothe teeth of the ratchetwheel 10, which should be firmly mounted uponthe drum-journal, at a point intermediate of the stud F and thegear-wheel H; and the handle of said pawl 0, which is preferably formedintegral therewith, extending outward through an opening, in the form ofa vertical slot, in the rear side of the hood 0, and terminating at apoint within convenient reach of the operator.

The operation of my invention, though simple and apparent, may be setforth as follows: The operator, standing upon the platform 1, rotates,by means of the crank b, the shaft 1), in the direction indicated by thearrow in Fig. 1, and consequently the drum G, through the medium of thegear-wheel H, in the direction indicated by the arrow in Fig. 5; whichoperation causes the rope or cable to wind upon the said drum, and theelevator to move upward. When desirous of descending, the operatorliberates the pawl 0, from the ratchet-wheel 19, (if these parts beused), and then raises the 'free end of the brake-lever 0 quickly,bringing the said brake-lever, at the point q, in contact with the wheelI), and holding the same there under strain sufficient to insure agradual downward movement of the elevator, which descends by its owngravity.

I claim as my improvement 1. In an elevator, comprising suitable framework composed in part of a centrally-open cross-head, the combinationof the clutch j, disposed within said cross-head and provided with agravity-arm, as j", the latter extending rearward from said clutchthrough a suitable opening in said cross-head, the lever 0', having asuitable pivotal connection at one end thereof, and the rod 1, thelatterbeing pivotally connected at its lower end to the lever 0', near thefree end thereof, and likewise connected at its upper end to thegravity-arm above named, all substantially as described and for thepurposes set forth.

2. Inauelevatorcomprisingsuitableframework composed in part of twoupright studs,

as F, in combination, the drum G, journaled at either end in said studs,the journal at one end thereof extending through and beyond the stud,the gear-wheel H, firmly mounted upon said drum-journal, the hood 0, sodisposed and secured to said frame-work as to inclose said gearwheel,the endless -screw shaft 1), journaled in the front side of saidhood,and extending rearward thereof through a suitable opening in therear side of said hood, the said shaft being so disposed within saidhood as to mesh at all times with the gear-wheel above named, theflanged collar e, fitting in the said opening in the rear side of thehood, and serving as a bearing for the shaft 1) at that point, and thecrank 12, carried by the shaft 5 at the rear end thereof, allsubstantially as described and for the purposes set forth.

3. In an elevator comprising suitable framework composed in part of twoupright studs, as F, in combination, the drum G, journaled at either endin said studs, the journal at one end thereof extending through andbeyond the stud, the ratchet-wheel p, firmly mounted upon thedrum-journal last named, adjacent to the stud in which the said journalbears, the pawl 0, pivotally connected to said stud and adapted toengage the teeth of said ratchet-wheel, the gear-wheel H, firmly mountedupon the drum-journal last referred to, and adjacent to theratchet-wheel p, the hood 0, so disposed and secured to said frameworkas to inclose said gear-wheel, ratchetwheel and pawl, the endless-screwshaft 1), disposed within said hood 0 as herein described and carryingat its rear end a crank 19', the flanged collar e, fitting within asuitable opening in the rear side of the hood 0, and serving as abearing for the shaft b at that point, and the rope f, one end of thelatter being secured to the drum G, and the other end thereof to asuitable object above the elevator, all

, substantially as described and for the purposes set forth.

4. In an elevator, comprisingsuitable framework composed in part of twoupright studs, as F, the drum G, journaled at either end in said studs,the journal at one end thereof extending through and beyond the stud,the gear-wheel H, firmly mounted upon said drumjo'urnal, the hood c, sodisposed and secured to said framework as to inclose said gearwheel, theendless -.screw shaft 1), disposed within said hood as herein described,and carrying at its rear end the crank 19, the flanged collar e, fittingwithin a suitable opening in the rear side of the hood 0, and serving asa bearing for the shaft 6 at that point, the wheel b", firmly mountedupon the shaft 1), between the crank 11' and the hood (2, the lever 0'',having a suitable pivotal connection at one end thereof, and disposed sothat the same may be brought in contact with the periphery of the wheel1)", upon the free end of said lever being raised, and the rope f, oneend of the latter being secured to the drum G and the other end thereofto a suitable object above the elevator, all substantially as describedand for the purposes set forth.

CARL HITZL.

Witnesses! A. O. TANNER, W. E. OVERTON.

